School of Medicine
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Diana Tordoff
Instructor, Obstetrics & Gynecology - General
BioDiana M. Tordoff, PhD, MPH is an epidemiologist with expertise in LGBTQ+ health equity and gynecological health research. Dr. Tordoff completed her PhD and MPH in Epidemiology at the University of Washington and received a BA with honors in Mathematics from Vassar College. She is also an affiliated researcher with The PRIDE Study (pridestudy.org), where she recently completed a postdoctoral fellowship. Her current research focuses on the impact of exogenous hormones (gender affirming hormones and menopause hormone therapy) on sexual and gynecological health. Her research interests include sexual and reproductive health, menopause, the vaginal microbiome, molecular epidemiology, intersectionality, and community-engaged research methods.
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Natalie Torok
Professor of Medicine (Gastroenterology and Hepatology)
Current Research and Scholarly InterestsOur lab is focused on exploring the role of matrix remodeling in disease progression in metabolic dysfunction steatohepatitis (MASH)-related hepatocellular carcinoma and primary sclerosing cholangitis. Our goal is to uncover how biomechanical characteristics of the ECM affect mechano-sensation, and how these pathways could ultimately be targeted. We are also interested in aging and its effects on metabolic pathways in MASH and HCC.
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Lénie Torregrossa, PhD
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
BioDr. Lénie Torregrossa is a clinical psychologist and Clinical Assistant Professor in the Department of Psychiatry and Behavioral Sciences at the Stanford University School of Medicine. At Stanford, she works on the inpatient psychiatric units and the INSPIRE clinic. Dr. Torregrossa was previously a research psychologist in the brain imaging and EEG lab at the University of San Francisco (UCSF).
She specializes in schizophrenia spectrum disorders, psychosis, and serious mental illness. Her approach to treatment is person centered and recovery focused, grounded in cognitive behavioral therapy (CBT) and informed by acceptance and commitment therapy (ACT). She emphasizes collaboration, values-based living, and meaningful functional goals.
Dr. Torregrossa's research focuses on risk and protective factors for schizophrenia-spectrum disorders, self-disturbances in schizophrenia, and improving treatments for psychosis.
She has published articles in many peer-reviewed journals, including JAMA Network Open, Schizophrenia Bulletin, Schizophrenia Research, and Frontiers in Psychiatry. She has presented to her peers at international, national, and regional meetings, including the European Conference on Schizophrenia Research, the International Consortium for Schizotypy Research, the Congress of the Schizophrenia International Research Society, and the Annual Meeting of the Society for Research in Psychopathology.
Dr. Torregrossa is a member of the Schizophrenia International Research Society, the Society of Biological Psychiatry, the American Psychological Association, and the North America CBT for Psychosis Network. -
Jacob Towery
Adjunct Clinical Instructor, Psychiatry and Behavioral Sciences
BioJacob Towery, MD is an adolescent and adult psychiatrist in private practice in Palo Alto, California. He attended Duke University for his undergraduate studies, University of Virginia for medical school, and Stanford for his residency in adult psychiatry and fellowship in adolescent psychiatry. He is the author of "The Anti-Depressant Book," available on Amazon. He currently serves on the Adjunct Faculty at Stanford University School of Medicine. He enjoys seeing patients, snowboarding, scuba diving, traveling, reading fantasy novels, meditating, spending quality time with other humans, making gratuitously long lists, and writing about himself in the third person. More information can be found at www.jacobtowerymd.com
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Michael Tracy
Clinical Associate Professor, Pediatrics - Pulmonary Medicine
BioDr. Tracy is a Clinical Associate Professor in the Division of Pediatric Pulmonary. His clinical interests include care for children with bronchopulmonary dysplasia (BPD), chronic respiratory failure, mechanical ventilation, childhood interstitial lung disease, and cystic fibrosis. He serves as the director Pediatric Pulmonary BPD Program, and co-director of the Cardiac and Respiratory care for Infants with BPD (CRIB) Program. He is the medical director of the Stanford Technology Assisted Respiratory (STAR) Program and the physician lead for the inpatient Pulmonary consult service at LPCH. Dr. Tracy is currently involved in clinical research to improve care for infants with BPD. With regard to medical education, he was formerly a chief resident in pediatrics at LPCH, and served as a faculty coach in the pediatric residency program.
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Nicholas Trakul, MD, PhD
Clinical Professor, Radiation Oncology - Radiation Therapy
BioDr. Nicholas Trakul is a radiation oncologist with Stanford Medicine Cancer Center and clinical associate professor of Radiation Oncology-Radiation Therapy with Stanford School of Medicine. Dr. Trakul serves as Medical Director for Stanford Medicine Radiation Oncology in Pleasanton and for the Stanford Medicine I Sutter Health Cancer Collaborative in Castro Valley.
Dr. Trakul completed residency training at Stanford in 2013 and then joined the faculty at the University of Southern California, where he specialized in head and neck and central nervous system malignancies, with an emphasis on stereotactic radiosurgery (SRS) and stereotactic ablative radiotherapy (SABR/SBRT). He is widely published as first author in peer-reviewed journals. His research focus involves the creation of novel clinical databases as well as outcomes in the treatment of head and neck, gastrointestinal and thoracic malignancies. In 2017, Dr. Trakul returned to Stanford Medicine, becoming the Medical Director of Stanford Medicine Radiation Oncology in Pleasanton. In 2020, he was named Medical Director of Stanford Radiation Oncology Network Sites. Dr. Trakul served as medical directorship of Eden Radiation Oncology Center from 2022 to 2023, the first site to become operation under the Stanford/Sutter Cancer Collaborative. In 2024, he was named Vice Chair and Director of the Radiation Oncology Network. In November of 2024, Dr. Trakul was named Medical Director of Alta Bates Herrick Radiation Oncology. He is focused on providing access to high quality radiation therapy, collaboration with community health care systems and creating/maintaining productive and high engagement workplace culture. He believes in providing personalized, high-quality care, and bringing new technology to the East Bay, allowing patients to access cancer care while staying connected to their communities and support networks. -
De Tran
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioI would like to use the office visits as opportunities to engage the patients in participating in managing their well-being, and to bring them world-class Stanford Health Care.
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Kenneth Tran, MD
Clinical Assistant Professor, Surgery - Vascular Surgery
BioDr. Tran is a vascular surgeon in the Vascular and Endovascular Surgery Division at Stanford Health Care. He is also a clinical assistant professor in the Department of Surgery, Division of Vascular Surgery at Stanford University School of Medicine.
Dr. Tran’s clinical expertise includes the entire spectrum of vascular surgery, including minimally invasive strategies for aortic aneurysm repair and multiple methods of managing peripheral vascular disease. He also specializes in treating cerebrovascular disease (problems with blood flow in the brain) using carotid angioplasty and stenting, transcarotid artery revascularization, and conventional carotid surgery. In addition, Dr. Tran offers comprehensive dialysis access management and treats venous reflux (when leg veins fail to return blood to the heart).
Dr. Tran has a special interest in minimally invasive techniques for repairing complex aortic conditions using custom stents placed inside blood vessels (endografts). He has expertise in designing, fabricating, and implanting physician-modified endografts tailor-made to each patient’s unique aortic anatomy. This technique expands the ability to offer minimally invasive repair to more patients.
Dr. Tran’s research efforts focus on utilizing novel computational approaches to better understand and optimize blood flow patterns after complex aortic repair. This work has helped improve the understanding of how different types of aneurysm repair perform long term. Dr. Tran hopes to use these research findings to improve clinical outcomes for patients with aortic aneurysmal disease.
Dr. Tran has published his work in numerous prestigious peer-reviewed journals, including the Journal of Vascular Surgery, JAMA Surgery, and the European Journal of Vascular and Endovascular Surgery. He has presented at the podium at numerous national and international conferences.
Dr. Tran has received multiple research awards, including the Vascular and Endovascular Surgery Society’s Medtronic Resident Research Award and Best Resident Presentation at the Swiss Society for Vascular Diseases. In addition, he received the Young Researcher Prize at the European Symposium on Vascular Biomaterials for his research related to complex aortic repair hemodynamics (blood flow). Dr. Tran also coauthored a chapter in the book Complications in Endovascular Surgery. -
Andrea Traynor
Clinical Professor, Anesthesiology, Perioperative and Pain Medicine
BioI completed my training at Stanford University with an Anesthesiology residency in 2003 and Obstetrical Anesthesia fellowship in 2004. I worked in a general private practice for two years at a community hospital in Colorado and was involved in creating protocols for OB related concerns such as non-obstetric surgery during pregnancy and skin to skin contact in the OR during cesarean delivery. I then returned to academic practice and worked for eight years at the University of Colorado and the Colorado Institute for Maternal and Fetal Health. I have collaborated extensively with the Stanford Anesthesia Informatics and Media Lab to create innovative educational tools. These include a major anesthesiology textbook, the Manual of Clinical Anesthesiology, and a comprehensive online learning program for anesthesiology residents called Learnly. I've been the OB anesthesia fellowship director at both the University of Colorado and Stanford University. I truly love guiding fellows from interested residents to consultants in OB anesthesia. My research interests include medical education and topics related to the Obstetrical Anesthesiology workforce.
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Jennifer Tremmel
Susan P. and Riley P. Bechtel Medical Director and Professor of Medicine (Cardiovascular Medicine)
Current Research and Scholarly InterestsDr. Tremmel studies sex differences in cardiovascular disease. Current research projects include evaluating sex differences in coronary pathophysiology, young patients presenting with myocardial infarction, the impact of stress on anginal symptoms, chronic total coronary occlusions, and vascular access site complications.
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Ranak Trivedi
Associate Professor of Psychiatry and Behavioral Sciences (Public Mental Health and Population Sciences)
Current Research and Scholarly InterestsEnhancing the role of informal caregivers in chronic disease self-management; assessment and treatment of mental illness in primary care settings; psychosocial antecedents and consequences of cardiovascular disease.
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Mickey Trockel
Professor of Psychiatry and Behavioral Sciences
BioMickey Trockel is the Director of Evidence Based Innovation for the Stanford University School of Medicine WellMD Center. His development of novel measurement tools has led to growing focus on professional fulfillment as a foundational aim of efforts to promote physician well-being. His scholarship also identifies interpersonal interactions at work as a modifiable core determinate of an organizational culture that cultivates wellness.
Dr. Trockel serves as the chair of the Physician Wellness Academic Consortium Scientific Board, which is a group of academic medical centers working together to improve physician wellbeing. The consortium sites have adopted the physician wellness assessment system Dr. Trockel and his colleagues have developed, which offers longitudinal data for benchmarking and natural experiment based program evaluation. His previous research included focus on college student health, and evaluation of the efficacy of a national evidence based psychotherapy dissemination effort. His more recent scholarship has focused on physician wellbeing. He is particularly interested in developing and demonstrating the efficacy of interventions designed to promote wellbeing by improving social culture determinants of wellbeing across student groups, employee work teams, or larger organizations. -
Milana Trounce
Clinical Professor, Emergency Medicine
BioDr. Boukhman Trounce graduated from the University of California San Francisco (UCSF) School of Medicine and went on to complete her emergency medicine residency and fellowship in Disaster Medicine and Bioterrorism Response at Harvard Medical School. She worked with the Center for Integration of Medicine and Technology (CIMT), a consortium of Harvard teaching hospitals and MIT, where she led BioSecurity related projects in conjunction with the US State Department. She also received her MBA from Stanford Business School.
After Harvard she joined UCSF as an Assistant Professor of Emergency Medicine and was Medical Director for Disaster Response. For the past 11 years, she has been at Stanford Medical School, where she is a Clinical Professor of Emergency Medicine.
She directs the BioSecurity program at Stanford, focused on protecting society from pandemics and other threats posed by infectious organisms, with a specific emphasis on approaches to interrupting transmission of infectious organisms in various settings. The background for the approach is outlined in her briefings at the Hoover Institute (see in publications list below). Stanford BioSecurity facilitates the creation of interdisciplinary solutions by bringing together experts in biology, medicine, public health, disaster management, policy, engineering, technology, and business. https://med.stanford.edu/biosecurity/about.html
At Stanford, over the past ten years she has established and directed a class on BioSecurity and Pandemic Resilience , which examines ways of building global societal resilience to pandemics and other biothreats and has educated over a thousand students. She has also taught an online Harvard course on medical response to biological terrorism, educating thousands of physicians globally.
She has served as a spokeswoman for the American College of Emergency Physicians (ACEP) and is a founding Chair of BioSecurity at ACEP. In addition to her academic research and speaking at national conferences, she also consults nationally and internationally to healthcare systems, governments, and other organizations. -
Megan Troxell
Professor of Pathology
Current Research and Scholarly InterestsBreast pathology, renal pathology, transplant pathology, immunohistochemistry
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Mai Thy Truong, MD
Clinical Professor, Otolaryngology (Head and Neck Surgery)
Clinical Professor (By courtesy), PediatricsBioMai Thy Truong, MD, is a Clinical Associate Professor in the department of Otolaryngology – Head and Neck Surgery, division of Pediatric Otolaryngology at Stanford Children’s Hospital. She serves as the Clinic Chief and the Fellowship Director for the division. Dr. Truong oversees a dedicated Microtia and Atresia Clinic to provide care for all the reconstructive and hearing rehabilitative needs of children with microtia and canal atresia. Dr. Truong’s other clinical interests include Vascular Anomalies, Fetal Management of critical airway (EXIT procedure), as well as Congenital head and neck masses and fistulas. Her research has explored the social impact of microtia, 3D modelling in microtia repair, the treatment of complex vascular anomalies and pediatric sleep apnea.
Dr. Truong received her Bachelor of Science from the University of California, Los Angeles in Neuroscience, graduating with honors. She went on to medical school at the University of California, Irvine. Dr Truong completed her residency training at Stanford University Hospital in Otolaryngology, Head and Neck Surgery. She did her Fellowship in Pediatric Otolaryngology at Stanford Children’s Hospital. She completed post-graduate training in Auricular reconstruction, microtia repair, in Paris, France with the world renown plastic surgeon, Dr. Francoise Firmin. Dr Truong is proficient in Spanish and conversational in Vietnamese languages. Her personal interests include musical theater and Karaoke. She strongly believes in the importance of respect for all the diversity of humankind. She is a Bay Area Native and loves the uniqueness that each niche of the Bay Area has. -
Albert Tsai, M.D., Ph.D.
Assistant Professor of Pathology
BioDr. Tsai received his undergraduate training at the University of California, Los Angeles (B.S., Biochemistry, summa cum laude), followed by combined medical and graduate training at the University of Southern California (M.D., Ph.D., Biochemistry). He completed anatomic and clinical pathology (AP/CP) residency and hematopathology fellowship at Stanford University, receiving board certification in AP/CP and hematopathology. As an instructor, he performed clinical diagnostic duties on the hematopathology service while doing postdoctoral training in the laboratory of Dr. Sean Bendall, with funding from the Damon Runyon Cancer Research Foundation.
As a physician and hematopathologist, he seeks to mechanistically dissect myelodysplastic syndromes (MDS) using highly-multiplexed immunophenotyping — mass cytometry / cytometry by time-of-flight (CyTOF) and multiplexed ion beam imaging (MIBI). MDS is an especially complex and heterogeneous disease of abnormal blood cell development with increasing prevalence and few treatments. By combining practical experience clinically diagnosing MDS, next generation single cell proteomic approaches, fundamental discoveries in the biology of MDS, and knowledge of clinical laboratory testing, we hope to develop new clinical diagnostics for personalizing MDS therapies and therapeutic monitoring.
His clinical diagnostic duties are on the hematopathology service, primarily in the diagnosis of MDS, leukemias, lymphomas, and other hematopoietic diseases from blood, bone marrow, and tissue samples. -
Albert H. Tsai
Clinical Associate Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr. Tsai is a Clinical Associate Professor in the Division of Cardiothoracic Anesthesia and the Program Director of the Adult Cardiothoracic Anesthesiology Fellowship. He completed his medical degree and anesthesiology residency at the University of Pennsylvania and a cardiothoracic anesthesiology fellowship at Stanford. Dr. Tsai has led numerous educational initiatives at the institutional and national levels, and has special interests in the role of augmented reality technology in medical simulation.
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Cynthia Tsai, MD, FACP
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Cynthia Tsai, MD, FACP, is a board certified internal medicine physician and Clinical Assistant Professor in the Department of Medicine at Stanford within the Division of Primary Care and Population Health. She is the Medical Director of Stanford Primary Care in Los Altos and is also the Los Altos Clinic Site Director for the Stanford Internal Medicine Residency.
Within the Division of Primary Care and Population Health, she serves as the Division Lead for Quality and Equity, and she has spearheaded work to improve the equitable care of patients from racial and ethnic minority groups and limited English proficiency patients with chronic diseases such as hypertension and diabetes.
She completed medical school at the University of California, San Francisco, School of Medicine, and she completed residency training in internal medicine and primary care in the UCSF Primary Care/General Internal Medicine (UCPC-GIM) track of the Internal Medicine residency program. A Bay Area native, she is eager to provide primary care for a complex patient panel here in the Bay Area. Her clinical interests include preventative healthcare, the care of older adults, addiction medicine, and behavioral medicine. She grew up in a bicultural and bilingual home and is fluent in Mandarin Chinese, and she provides language concordant care to Mandarin speaking patients.
Outside of patient care, she has interests in ambulatory medical education, health equity, and the cultivation of early trainee interest in primary care. She also has strong interest in the medical humanities and narrative medicine, and has published personal perspective pieces in publications such as JAMA and the San Francisco Chronicle. -
Emily B. Tsai
Clinical Associate Professor, Radiology
Current Research and Scholarly InterestsLung cancer screening
Clinical applications of machine learning
Comparative effectiveness research
Image-guided biopsy and intervention -
Jacqueline Tsai, MD, FACS
Clinical Associate Professor, Surgery - General Surgery
Current Research and Scholarly InterestsMy research interests are focused on improving breast cancer surgeries. I am interested in novel techniques in surgery to improve cosmetic outcomes, minimize surgical re-excisions and possible augmented reality technologies to enhance surgery.
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Jennifer Tsai
Adjunct Clinical Instructor, Pediatrics - Hematology & Oncology
BioJennifer is a researcher in clinical development of novel therapeutics for hematologic diseases. She has a special interest in rare pediatric disorders.
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Lillian L. Tsai, MD
Clinical Assistant Professor, Cardiothoracic Surgery
BioDr. Lillian L. Tsai is a fellowship-trained cardiothoracic surgeon with Stanford Health Care. She is a clinical assistant professor in the Department of Cardiothoracic Surgery, Division of Thoracic Surgery at Stanford University School of Medicine.
Dr. Tsai specializes in thoracic surgery, providing all aspects of care from diagnosis through recovery. She has expertise in treating complex thoracic diseases with robotics and minimally invasive techniques, which often increase precision, reduce risk, and improve recovery. She is dedicated to delivering comprehensive, patient-centered care that combines technical excellence with compassion.
As a physician-researcher, Dr. Tsai has completed a dedicated, grant-funded research fellowship in thoracic surgery during her general surgery training. Her research portfolio spans basic and translational science and clinical outcomes, as well as clinical trials. Her current research focuses on using artificial intelligence to improve diagnosis, surgical planning, and outcomes in thoracic surgery.
Dr. Tsai has published in many renowned peer-reviewed journals, including Annals of Thoracic Surgery, Annals of Surgery, and Journal of Thoracic and Cardiovascular Surgery. She has also shared her expertise and research at conferences across the country, such as the American Association for Thoracic Surgery, the Society of Thoracic Surgeons, and the Southern Thoracic Surgical Association.
Dr. Tsai is a member of the Society of Thoracic Surgeons. -
Stephen Tsai
Professor (Research) of Aeronautics and Astronautics, Emeritus
BioProfessor Tsai's research interest is in the development of design methodology of composite materials and structures. As an emerging technology, composite materials offer unique performances for structures that combine light weight with durability. Keys to the successful utilization of composite materials are predictability in performance and cost effective design of anisotropic, laminated structures. Current emphasis is placed on the understanding of failure modes, and computer simulation for design and cost estimation.
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Timothy Tsai
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Tsai is a board-certified family medicine physician, clinical informaticist, and trained in osteopathy. He is a clinical assistant professor in the Stanford University School of Medicine Department of Medicine – Primary Care and Population Health. Prior to joining Stanford Health Care, he obtained a Master of Management in clinical informatics from Duke University.
Dr. Tsai seeks to improve clinician workflows and patient care by applying his knowledge of clinical informatics. His innovations allow providers to quickly access, share, and document information to advance patient care. He has also held many notable leadership, educational, and quality control positions throughout his career.
Dr. Tsai investigates ways to maximize the time clinicians spend with patients. He expedites and standardizes communication between health care providers and patients through the integration of mobile devices and remote patient monitoring programs. He streamlines the documentation process by updating electronic medical record tools and creating more efficient patient questionnaires to optimize the quality of care.
He has presented his research orally or in poster format at the American Medical Informatics Association, Family Medicine Education Consortium, and American Association of Neuromuscular and Electrodiagnostic Medicine. As a medical student, Dr. Tsai developed an open online osteopathic manipulation course, enrolling over 1,200 students. As a clinical fellow at Duke, he co-authored a textbook chapter on the future of health informatics -
Philip S. Tsao, PhD
Professor (Research) of Medicine (Cardiovascular Medicine)
Current Research and Scholarly InterestsOur primary interests are in the molecular underpinnings of vascular disease as well as assessing disease risk. In addition to targeted investigation of specific signaling molecules, we utilize global genomic analysis to identify gene expression networks and regulatory units. We are particularly interested in the role of microRNAs in gene expression pathways associated with disease.
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Gabriel Tse
Clinical Assistant Professor, Pediatrics
BioDr. Gabriel Tse, MBChB, MS, is a Clinical Assistant Professor of Pediatrics and a pediatric hospitalist at Lucile Packard Children's Hospital. His clinical responsibilities include caring for hospitalized children at Stanford Medicine Children's Health. He is a grant-funded researcher whose academic interests include evaluating novel health technologies to ensure that they are safely, effectively, and equitably deployed.
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Michael David Tseng, MD
Clinical Assistant Professor, Orthopaedic Surgery
BioMichael D. Tseng, MD is an orthopedic spine surgeon who specializes in spinal injuries and degenerative spine conditions. After over a decade in private practice, he was recruited to join the Stanford University School of Medicine faculty to serve as the Spine Section Chief at Stanford Health Care Tri-Valley.
Dr. Tseng completed his undergraduate training at the University of Michigan, where he earned a degree in Biochemistry with Honors. He then went on to receive his MD at Weill Cornell University in New York, NY. He completed his internship and orthopedic surgery residency at renowned spine center William Beaumont Hospital in Royal Oak, Michigan. He then completed a spinal surgery fellowship at UCSF, where he worked with both orthopedic spine and neurosurgery faculty.
Dr. Tseng has been an investigator in basic science, biomechanical and clinical research projects. He has presented at national and international spine conferences and published work in peer reviewed spine journals. He is a reviewer for the Spine Journal and the BMJ Best Practice-Spinal Stenosis section. He relishes contributing to the education of future surgeons as clinical faculty in the Stanford Orthopedic Surgery Residency and Stanford Orthopedic Spine Surgery Fellowship programs.
As a fellowship-trained spine surgeon, Dr. Tseng treats a comprehensive range of injuries and conditions of the spine, including injuries to the neck and back.
He believes in a conservative approach to treatment and always considers using nonoperative methods before recommending surgery. A holistic approach including education, core strengthening, limited medications, acupuncture or chiropractic care may address many common conditions including back pain.
When surgery is necessary, he uses a caring bedside manner to form a collaborative treatment plan with his patients. He believes that well-informed patients have the best outcomes. His mission is to empower you with tools for functionality and wellness.
He approaches surgery with a “minimalist” approach, doing the least surgery possible to achieve his patient’s objectives. When appropriate, he is skilled using the latest motion sparing surgical techniques such as endoscopic and microsurgical decompression, laminoplasty, and artificial disc replacement. He has completed advanced training in cervical disc replacements and endoscopic spine surgery. He is experienced with minimally-invasive direct lateral spinal fusion and the Barricaid Annular Closure device for disc herniation surgery.
Dr. Tseng is fortunate to work with Christopher Hydock, PA-C, an exceptional and experienced Physician Assistant.
When Dr. Tseng is not seeing patients, he stays active through personal fitness, running, skiing and golf. He also enjoys cooking, music and spending time with family. -
Richard Tsien
George D. Smith Professor, Emeritus
Current Research and Scholarly InterestsWe study synaptic communication between brain cells with the goal of understanding neuronal computations and memory mechanisms. Main areas of focus include: presynaptic calcium channels, mechanisms of vesicular fusion and recycling. Modulation of synaptic strength through changes in postsynaptic receptors and dendritic morphology. Signaling that links synaptic activity to nuclear transcription and local protein translation. Techniques include imaging, electrophysiology, molecular biology.
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Geoffrey Tso
Clinical Assistant Professor, Medicine - Primary Care and Population Health
Current Research and Scholarly InterestsClinical Informatics, Generative AI, LLM, Clinical Decision Support, Digital Health, Multimorbidity, Preventive Health, Telemedicine, Telehealth, Machine Learning, Artificial Intelligence
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Jason V. Tso, MD
Clinical Assistant Professor, Medicine - Cardiovascular Medicine
BioDr. Tso is a board-certified cardiologist with the Sports Cardiology Program and the Center for Inherited Cardiovascular Disease. He serves as medical director of the Sports Cardiology Program and is a clinical assistant professor in the Division of Cardiovascular Medicine at Stanford University School of Medicine.
With clinical expertise in sports cardiology, Dr. Tso specializes in treating physically active patients. He cares for recreational weekend warriors, elite and professional athletes, and all those in between.
He has experience caring for athletes from professional sports teams and multiple National Collegiate Athletic Association (NCAA) Division I universities. Dr. Tso performs cardiac screening and consultation for multiple Bay Area sports teams and is the team cardiologist for Stanford Athletics and the San Francisco 49ers.
Dr. Tso’s research interests include cardiovascular health and adaptation in athletes. He has spent years studying American-style football players and Masters endurance athletes. He has presented his research at multiple national meetings, including the American College of Cardiology Scientific Sessions, American Heart Association Scientific Sessions, Heart Failure Society of America, and American College of Sports Medicine.
Dr. Tso’s research has been published in multiple peer-reviewed journals including the Journal of the American Heart Association, the European Journal of Preventive Cardiology, and the British Journal of Sports Medicine. He also regularly serves as a reviewer for multiple cardiology and sports medicine journals. -
Chi-Ho Ban Tsui
Adjunct Clinical Professor, Anesthesiology, Perioperative and Pain Medicine
BioDr. Tsui completed his medical training at Dalhousie University in Halifax in 1995, following his Master of Science in Pharmacy in 1991. These degrees followed a Diploma in Engineering and a Bachelor of Science in both Mathematics and Pharmacy. After 16 years of practice at the University of Alberta Hospital and Stollery Children’s Hospital, Dr. Tsui was recruited to Stanford University in 2016.
Dr. Tsui is an avid and internationally recognized researcher. During his residency, Dr. Tsui developed an interest in improving the accuracy of epidural catheter placement and was issued a U.S. patent for his research. Dr. Tsui has expanded his research on ultrasound in regional anesthesia, with particular relevance to peripheral nerve block performance. Dr. Tsui is also responsible for developing the E-Catheter catheter-over-needle kit for use during peripheral nerve blocks. The primary objective of his research is to transform regional anesthesia from an “art” into a reliable and reproducible “science” by further exploring the fundamental scientific and clinical aspects of electrophysiological signal monitoring and integrating this with the latest advances in ultrasound.
Academically, Dr. Tsui received the 2005 John Bradley Young Educator Award from the Canadian Anesthesiologists' Society. This award recognizes his work as a clinical educator, researcher, and anesthesia trainee role model. While in Canada, Dr. Tsui was the only Canadian invited to write a chapter for a prestigious American anesthesia textbook - Clinical Anesthesia (Barash). Dr. Tsui wrote the first textbook on Ultrasound and Nerve Stimulation-Guided Regional Anesthesia. Dr. Tsui also co-authored the first pediatric textbook on the subject, the Pediatric Atlas of Ultrasound- and Nerve Stimulation-Guided Regional Anesthesia. Dr. Tsui co-authored and edited "Principles of Airway Management" and "Complications in Regional Anesthesia." From 2006 to 2018, Dr. Tsui served on the editorial board of the Canadian Journal of Anesthesia. Dr. Tsui is currently the editor of the Regional Anesthesia and Pain Medicine.
Dr. Tsui has received the Alberta Heritage Foundation for Medical Research (AHFMR) Clinical Scholar award and has previously received research awards and grants from the Canadian Institutes of Health Research (CIHR), Canadian Anesthesiologists’ Society, AHFMR, and University of Alberta. In 2015, the CAS Research Recognition Award, a prestigious award presented by the Canadian Anesthesiologists’ Society, was awarded to Dr. Tsui "in recognition of significant research contributions to regional anesthesia, acute pain management, and pediatric anesthesia in Canada and around the world". In 2022, the American Society of Regional Anesthesia and Pain Medicine (ASRA) awarded Dr. Tsui the Distinguished Service Award. This prestigious annual award honors individuals who have made remarkable contributions to the field of regional anesthesia and pain medicine
In 2025, in celebration of its 50th anniversary, ASRA honored Prof. Ban C.H. Tsui with the prestigious Gaston Labat Award. Presented annually since 1977 to recognize exceptional contributions to regional anesthesia, ASRA specifically chose Prof. Tsui as the 2025 recipient to mark this significant milestone.
Dr. Tsui was a full professor and is now an adjunct professor in the Department of Anesthesiology, Perioperative, and Pain Medicine at Stanford University. Recently, the Chinese University of Hong Kong, Shenzhen, recruited Dr. Tsui as an associate dean (Clinical Innovation & Translational Research), Chair, and Chief of the Department of Anesthesiology, Critical Care, and Pain Medicine. He was then shortly promoted to the position of Executive Associate Dean of the School of Medicine. Dr. Tsui is also an Honorary Full Professor at the Chinese University of Hong Kong. -
Yuri Tsutsumi
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
Current Research and Scholarly InterestsClinical Psychology
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Yetsa A. Tuakli-Wosornu, MD, MPH
Associate Professor of Orthopaedic Surgery and of Medicine (SPRC)
BioDr. Tuakli-Wosornu is a board-certified, fellowship-trained physical medicine and rehabilitation physician (physiatrist) with Stanford Health Care and an associate professor in the Department of Orthopaedics and Sports Medicine, Division of Physical Medicine and Rehabilitation.
Dr. Tuakli-Wosornu specializes in interventional spine and sports medicine treatments. She diagnoses and treats a wide range of sports medicine conditions, while helping individuals achieve high performance through holistic mind-body techniques and therapies. Her passion lies in advancing equity in sports, improving the lives of marginalized populations—including those with disabilities—and demonstrating the transformative power of sport.
Dr. Tuakli-Wosornu's multifaceted approach combines clinical expertise, cutting-edge research, and advocacy to advance sports medicine and promote inclusivity in athletics. Her research interests include evidence-based approaches to prevent injury, relieve pain, and optimize health and performance. Her research has received support from organizations such as the International Olympic Committee and the American Medical Society for Sports Medicine.
Dr. Tuakli-Wosornu has published extensively on parasports medicine, athlete safeguarding, and sports equity in prestigious, peer-reviewed journals, such as the American Journal of Physical Medicine & Rehabilitation and the British Journal of Sports Medicine, where she serves as an associate editor. Her work includes book chapters on paralympic sports and sports nutrition for paralympic athletes.
Dr. Tuakli-Wosornu is actively involved in several professional societies, including the International Blind Sports Federation, the International Olympic Committee, and Safe Sport International. She chairs numerous committees focused on athlete welfare and physical activity for people with disabilities. Through these roles, Dr. Tuakli-Wosornu promotes fair play, education, and the global benefits of sport. -
Jason Tucciarone, MD, PhD
Assistant Professor of Psychiatry and Behavioral Sciences (General Psychiatry and Psychology)
BioJason Tucciarone, MD, PhD is an Assistant Professor in the Department of Psychiatry and Behavioral Sciences at Stanford School of Medicine. A neuroscientist and psychiatrist, he leads a laboratory focused on uncovering the biological mechanisms of mental illness and developing novel therapies for mood disorders and addiction. His research centers on defining new cell types and evolutionarily conserved neural circuits involved in emotional processing, with the goal of identifying new therapeutic entry points. Using optogenetic, chemogenetic, neuroimaging, and behavioral approaches in mouse models of addiction, his lab investigates vulnerable brain circuitry underlying opioid use disorder. He also works and collaborates with the Depression Research Clinic, participating in academic and industry sponsored clinical trials investigating novel antidepressant therapies.
Clinically, Dr. Tucciarone works in Stanford’s Neuropsychiatry Clinic, where he treats patients with complex presentations at the interface of psychiatry and neurology, with particular interest in functional neurological disorders. He also sees a small cohort of psychotherapy patients in the Individual Psychotherapy Clinic and works shifts on Stanford’s inpatient psychiatry units.
Dr. Tucciarone completed his psychiatry training through Stanford’s Research Residency Track, where he conducted postdoctoral research under the supervision of Drs. Robert Malenka and Alan Schatzberg. During residency, his research examined neural circuits recruited during opioid withdrawal and explored strategies to enhance the anti-suicidal effects of ketamine through μ-opioid receptor partial agonism.
He received his bachelor’s degree in biology and philosophy from Union College, followed by three years as a Post-Baccalaureate IRTA fellow at the National Institute of Neurological Disorders and Stroke, where he developed MRI-reportable contrast agents to map neuronal connectivity. He then entered the Medical Scientist Training Program (MD/PhD) at Stony Brook University, completing his PhD in neuroscience under the mentorship of Dr. Josh Huang at Cold Spring Harbor Laboratory. His doctoral work used mouse genetic approaches to dissect excitatory and inhibitory cortical circuits, with a focus on chandelier interneurons in the prefrontal cortex.
In addition to his research and clinical work, Dr. Tucciarone is deeply committed to teaching and mentorship. During residency, he helped restructure neuroscience education for trainees and currently teaches introductory lectures on the neuroscience of addiction, PTSD, psychosis, and mood disorders. He leads resident group supervision in introductory psychodynamic psychotherapy and supervises undergraduates, medical students, residents, and clinical fellows in psychiatry clinics. -
Minang (Mintu) Turakhia
Clinical Professor, Medicine
Current Research and Scholarly InterestsDr. Turakhia has an active clinical research program, with funding from AHA, VA, NIH, the medical device industry, and foundations. His research program aims to improve the treatment of heart rhythm disorders, with an emphasis on atrial fibrillation, by evaluating quality and variation of care, comparative and cost-effectiveness of therapies, and risk prediction. Dr. Turakhia has extensive expertise in using large administrative and claims databases for this work. His TREAT-AF retrospective study of over 500,000 patients with newly-diagnosed AF is the largest known research cohort of AF patients. He has served as study PI or chairman of several prominent single- and multicenter trials in atrial fibrillation, investigational devices for electrophysiology procedures, digital health interventions, and sensor technologies.
His other research interests include technology assessment of new device-based therapies and the impact of changing health policy and reform on the delivery of arrhythmia care. Dr. Turakhia is a Fellow of the American Heart Association, American College of Cardiology, and Heart Rhythm Society. -
Mirela Tuzovic, MD
Clinical Assistant Professor, Medicine - Cardiovascular Medicine
BioDr. Mirela Tuzovic is a board-certified, fellowship-trained cardiologist and medical director of the Stanford Health Care Center for Marfan Syndrome and Related Aortic Disorders. Dr. Tuzovic is also a clinical assistant professor in the Department of Medicine, Division of Cardiovascular Medicine at Stanford University School of Medicine.
Dr. Tuzovic diagnoses and treats a wide range of cardiovascular conditions, including aortic disorders, Marfan syndrome and other heritable thoracic aortic disorders, and cardiovascular disease. She also specializes in cardiovascular imaging and structural echocardiology. For each of her patients, she offers a comprehensive, personalized care plan.
Dr. Tuzovic’s research interests include the diagnosis and management of patients with aortic disease as well as cardiovascular imaging. As a structural echocardiographer, she is involved in multiple clinical trials for transcatheter valve repair and replacement through the Stanford Health Care Structural Heart Program. Her prior research focus has included echocardiography and cardio-oncology.
Dr. Tuzovic has published her research in peer-reviewed journals such as Circulation, the American Journal of Cardiology, Echocardiography, and JACC: CardioOncology.
Dr. Tuzovic is a member of the American College of Cardiology, the American Society of Echocardiography, and the Montalcino Aortic Consortium. -
Dona Tversky
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
BioDona A. Tversky, MD, MPH is a psychiatrist and clinical educator whose work focuses on the intersection of psychodynamic psychotherapy and community-based preventive mental health. Her mission centers on the creation of psychologically healthy environments—at both the individual and systemic levels—to foster resilience and expand the scope of preventive psychiatric care. At Stanford, Dr. Tversky focuses on the training of future clinicians and the dissemination of psychiatric literacy. She serves as a clinical supervisor for residents in psychodynamic psychotherapy and teaches "How to Think Like a Shrink" for both Stanford undergraduates and the Stanford Continuing Studies program.
In her community-based work, Dr. Tversky serves as an educator and psychiatric consultant for the integrated behavioral health team at Ravenswood Family Health Center in East Palo Alto. Her current initiatives bridge clinical care with environmental design to promote wellness; these include a collaborative project to connect the Ravenswood clinic to the Baylands Bay Trail and a partnership with the Stanford d.school, Peninsula Healthcare Connection, and Palo Alto Medical Foundation to develop a psychology-informed clinic for unhoused individuals near the Stanford campus. -
Nichole Tyson MD
Clinical Professor, Obstetrics & Gynecology
Clinical Professor (By courtesy), PediatricsBioNichole Tyson MD is a Clinical Professor of Obstetrics and Gynecology at Stanford University School of Medicine. She specializes in Pediatric and Adolescent Gynecology (PAG). For over 20 years, Dr. Tyson has partnered with girls and their families as they journey from childhood through adolescence and into adulthood. Dr. Tyson enjoys solving complex problems as well as common concerns that can be overlooked and challenging to girls and young women. She is been recognized locally, nationally and internationally a leader in the field and skilled and experienced surgeon caring for patients with endometriosis, adnexal masses and variations in urogenital anatomy.
As a Pediatric and Adolescent Gynecologist, she specializes in problems such as abnormal periods, hormone management and adolescent contraception in people with underlying medical conditions, pelvic masses, differences of sex development and complex utero-vaginal anatomy.
She has been a leader on a number of national medical committees, including Vice President of the North American Society of Pediatric and Adolescent Gynecology (NASPAG), immediate past-chair of the American Association of Gynecologic Laparoscopy (AAGL) Pediatric and Adolescent Gynecology special interest group and associate member of the Contraception Committee for the International Federation of Gynecology and Obstetrics (FIGO). She is an active contributor to the peer reviewed literature in pediatric and adolescent gynecology, obstetrics and gynecology, contraception and laparoscopic surgery. Dr. Tyson also has extensive experience with the consumer press as an adolescent gynecology expert for numerous online articles in such magazines as Seventeen, Self and NY Times.
She is the Chief of Pediatric and Adolescent Gynecology at Stanford Children's Hospital and the Director of Mentorship and Coaching for the Ob/Gyn Department. She is passionate about teaching, mentorship and coaching, working closely with medical students, residents and fellows. She is an innovator in education, both developing and and implementing numerous curricula in Gynecology, Pediatric Adolescent Gynecology, Simulation education, Surgical Coaching and Leadership and Professionalism. She is currently working as a chief editor for two PAG textbooks-one titled PAG essentials and the other, the first ever PAG surgical textbook, both due for publication in 2024-2025. -
Suji Uhm, MD, MPH
Clinical Associate Professor, Obstetrics & Gynecology
BioDr. Suji Uhm is a board-certified obstetrician-gynecologist at Stanford Health Care. She also serves as a clinical associate professor in the Department of Obstetrics & Gynecology, Division of Gynecology & Gynecologic Specialties at Stanford University School of Medicine.
Dr. Uhm offers a wide range of gynecologic services, including gynecologic care, routine and complex contraceptive and abortion services, and wellness exams. She strives to provide safe, patient-centered care and often cares for patients who have medical conditions that complicate contraceptive use or report prior negative experiences.
Dr. Uhm’s research focuses on assessing the safety and effectiveness of contraceptive methods. She has been an investigator in multiple industry-sponsored and National Institutes of Health (NIH)-funded studies, including the evaluation of extending the use of a subdermal implant, nonhormonal IUD, vaginal ring, and contraceptive patch.
Dr. Uhm has been published in several peer-reviewed journals, including Contraception, Nature, and The American Journal of Surgery. She has also presented to colleagues at regional, national, and international meetings, including the Society of Family Planning (SFP) annual meeting.
Dr. Uhm is a fellow of the American College of Obstetricians and Gynecologists (ACOG) and SFP. She is also a member of the National Abortion Federation and Physicians for Reproductive Health. -
Mirko Uljarevic
Clinical Associate Professor, Psychiatry and Behavioral Sciences
BioI am a medically trained researcher focused academic with a background in developmental psychopathology, psychometrics and big data science. My research takes a life-span perspective and is driven by the urgent need to improve outcomes for people with autism and other neuropsychiatric (NPD) disorders and neurodevelopmental conditions (NDD). My primary research interest has focused on combining cutting-edge psychometric procedures and a big data approach to better understand structure of clinical phenotypes across autism and other NPD and NDD and on using this knowledge to improve existing and develop new clinical assessments that are more effective for screening and diagnosis, tracking the natural and treatment-related symptom progression and for use in genetic and neurobiological studies. In addition to my focus on the development of outcome measures, I have collaborated with leading psychopathology researchers and groups in the United States, Europe and Australia on numerous projects spanning a range of topics including genetics, treatment and employment, with a particular focus on understanding risk and resilience factors underpinning poor mental health outcomes in adolescents and adults. Most recently, through several competitively funded projects, I have led the statistical analyses to uncover the latent structure of social and communication and restricted and repetitive behaviors (RRB) clinical phenotypes across NPD and NDD. These findings have enabled us to (i) start capturing and characterizing a highly variable social functioning phenotype across a range of disorders and understanding mechanisms underpinning this variability, (ii) combine phenotypic and genetic units of analyses to advance our understanding of the genetic architecture of RRB, and (iii) focus on identification and characterization of subgroups of individuals that share distinct symptom profiles and demonstrate clinical utility and neurobiological validity. Importantly, this work has provided key information for developing a programmatic line of research aimed at developing novel, comprehensive assessment protocols that combine parent and clinician reports, objective functioning indicators and incorporate state-of-the-art psychometric, mobile and connected technologies and procedures.
I am a co-director of the recently established Program for Psychometrics and Measurement-Based Care (https://med.stanford.edu/sppmc.html) that aims to bring together world-leading expertise in clinical science, psychometrics, and big data analytics to bridge the gap between the science of measurement development and clinical practice and bring improvements to both clinical care and research. -
Ndidi Unaka
Clinical Professor, Pediatrics
BioDr. Unaka is the inaugural Chief Health Equity Officer (CHEO) for Stanford Medicine Children’s Health (SMCH) and a Clinical Professor in the Department of Pediatrics at Stanford University School of Medicine. Prior to her transition to SMCH in July 2024, Dr. Unaka was a faculty member in the Division of Hospital Medicine at Cincinnati Children's Hospital. In addition to her clinical role as a pediatric hospitalist, Dr. Unaka served as the Associate Program Director of the Pediatric Residency Program from 2011 – January 2022. She served as the medical director of a 48- bed inpatient unit primarily for patients admitted to the Hospital Medicine service. In this role, Dr. Unaka was involved in several equity-oriented quality improvement initiatives which included work to identify, and address hunger among caregivers of hospitalized children insured by Medicaid.
Dr. Unaka worked on institution-level community health initiatives at Cincinnati Children’s. She served as the Medical Director of Quality Improvement and Data Analytics for Cincinnati Children’s Medicaid- focused, accountable care organization (HealthVine). In this role, she developed and led initiatives designed to improve the quality and efficiency of health care delivery to HealthVine’s patient population and helped lead the change management associated with the movement toward a population-health care model that improves quality, narrows equity gaps, streamlines care, and reduces costs. She helped define appropriate health care delivery, equity, and population health measures and quality benchmarks. Additionally, Dr. Unaka was a faculty lead within Cincinnati Children's Fisher Child Health Equity Center, and she specifically focused on working with operations leaders to ensure equity was embedded within all strategic plans, goals, and metrics across all sites of care. Dr. Unaka partnered with several colleagues to lead system-wide quality improvement initiatives including work accelerated via learning networks. She was the co-lead of Cincinnati Children's Health Equity Network (HEN), an initiative borne out of the pursuit of excellent and equitable health outcomes for youth in Greater Cincinnati. The HEN supports clinical teams seeking to eliminate disparities in child health outcomes by race, ethnicity, and/or socioeconomic status via targeted interventions and best practices by addressing both medical and social factors known to confer poor health outcomes. -
Crystal Unzueta, MD
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioDr. Unzueta is a board-certified family medicine physician. She specializes in providing primary care services to people of all ages. Her services include annual check-ups, monitoring chronic conditions, and performing minor in-office procedures.
She is also a clinical assistant professor in the Stanford School of Medicine Department of Family Medicine.
Dr. Unzueta’s practice focuses on providing compassionate and comprehensive care. She specializes in providing bilingual and bicultural care for patients in underserved populations. She has traveled to Belize on a medical mission to provide free, basic primary care to vulnerable communities. Her mentoring work includes building a network of Latino medical students to help support each other throughout medical school. She has also worked on numerous volunteer projects, such as researching the benefits of a community yoga program for minorities in underserved areas. -
Alexander Eckehart Urban
Associate Professor of Psychiatry and Behavioral Sciences (Major Laboratories and Clinical Translational Neurosciences Incubator) and of Genetics
Current Research and Scholarly InterestsComplex behavioral and neuropsychiatric phenotypes often have a strong genetic component. This genetic component is often extremely complex and difficult to dissect. The current revolution in genome technology means that we can avail ourselves to tools that make it possible for the first time to begin understanding the complex genetic and epigenetic interactions at the basis of the human mind.
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PJ Utz
Professor of Medicine (Immunology and Rheumatology)
Current Research and Scholarly InterestsThe long-term research goal of the Utz laboratory is to understand autoimmunity, autoantibodies, and how tolerance is broken and can be reestablished.
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Sivakamasundari V
Instructor, Institute for Stem Cell Biology and Regenerative Medicine
BioMy research interests are focused on understanding the molecular basis of early development and stem cells, as it is often aberrations in stem cells or signaling mechanisms between tissues that lead to diseased states, including tumor development and cancer progression. Knowledge of stem cells and development is also critical to develop appropriate cell-based therapies for various diseases or injuries. My prior and current works take advantage of both traditional techniques (gene targeting, lineage tracing) and state-of-the-art technologies (Single cell RNA sequencing, Chromatin Immunoprecipitation (ChIP-seq), Imaging Mass Cytometry) to elucidate fundamental molecular mechanisms underlying signaling in tissue biology.
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Randall Vagelos, MD
Professor of Medicine (Cardiovascular)
Current Research and Scholarly InterestsI. Congestive Heart Failure New Medical Therapies Prognostic Evaluation Selection for Cardiac Transplantation II. Screening for Myocardial Necrosis New ECG Monitoring Devices New Serum Markers III. Screening for CAD Patients Who Have Received Radiation Rx Diabetics Being Considered for Renal Transplantation
IV. Advanced coronary and valvular disease, evaluationg candidacy for high risk interventions. -
Sharif Vakili, MD, MBA, MS
Clinical Assistant Professor, Medicine - Primary Care and Population Health
BioSharif Vakili, MD, MBA, MS, (pronouns: he/him), is an internal medicine physician, clinician executive and educator. He practices at Stanford Los Altos Primary Care.
Dr. Vakili has a background in chronic disease management and health systems delivery, believing strongly in a teamwork approach to patient care that empowers patients to navigate the health system as part of their clinical care.
He is active in the research and business communities. His research has been in peer-reviewed journals including NEJM Catalyst, JAMA Network Open and the Annals of Emergency Medicine. He also teaches annually at the Stanford Graduate School of Business.
Dr. Vakili is credited with establishing and coining Remote Patient Intervention (RPI), a model of clinician-supervised AI care delivery first performed at Stanford during a clinical study published in JAMA Network Open. His work has defined the emerging field of Clinical AI, in which artificial intelligence delivers care that would otherwise be performed by a licensed practitioner. -
Hannah Valantine
Professor of Medicine (Cardiovascular)
Current Research and Scholarly InterestsMy lab is focused on understanding the mechanism mediating acute and chronic allograft failure, in particular on the role of microvascular injury in acute allograft failure and the mechanisms of mediating transplant coronary artery disease. 1. Role of microvascular injury in acute allograft failure.
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Tulio Valdez, MD, MSc
Professor of Otolaryngology - Head & Neck Surgery (OHNS) and, by courtesy, of Pediatrics
BioDr. Tulio A Valdez is a surgeon scientist with a subspecialty interest in Pediatric Otolaryngology. He attended medical school at Universidad Javeriana in Bogota Colombia before undertaking his residency in Otolaryngology, Head and Neck Surgery in Boston. He completed his Pediatric Otolaryngology Fellowship at Texas Children’s Hospital (2007), Houston and obtained his Master’s in Clinical and Translational Research at the University of Connecticut.
Clinically, Dr. Valdez has an interest in pediatric sleep apnea. He has a special interest in the management of sinus disease in cystic fibrosis. Dr. Valdez has co-authored one textbook and numerous book chapters and scientific manuscripts. Dr. Valdez continues his clinical research in these areas, particularly with a focus on aerodigestive disorders.
Scientifically, Dr. Valdez has developed various imaging methods to diagnose otitis media and cholesteatoma a middle ear condition that can lead to hearing loss. He was part of the Laser Biomedical Research Center at the Massachusetts Institute of Technology. His research includes novel imaging modalities to better diagnose ear infections one of the most common pediatric problems. His research has now expanded to include better intraoperative imaging modalities in pediatric patients to improve surgical outcomes without the need for radiation exposure.
Dr. Valdez believes in multi-disciplinary collaborations to tackle medical problems and has co-invented various medical devices and surgical simulation models. -
Keara E. Valentine
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
BioKeara E. Valentine, Psy.D., is a clinical assistant professor at Stanford University School of Medicine in the Psychosocial Treatment Clinic and OCD Clinic, where she specializes in the assessment and treatment of OCD and related disorders. Dr. Valentine utilizes behavioral-based therapies including Cognitive Behavioral Therapy (CBT) and Exposure and Response Prevention (ERP) with children, adolescents, and adults experiencing anxiety-related disorders.
Dr. Valentine completed an APA accredited pre-doctoral internship at Alexian Brothers Behavioral Health Hospital, where she complete a rotation in OCD and anxiety disorders and a rotation in Eating Disorders. Dr. Valentine has experience working with individuals with OCD, anxiety, and/or eating disorders at various levels of care including outpatient, partial hospitalization, residential, and inpatient. -
Axel Valle, PsyD
Clinical Assistant Professor, Psychiatry and Behavioral Sciences
BioDr. Axel Valle is a licensed clinical psychologist providing individual psychotherapy in English and Spanish. He specializes in cognitive behavioral therapy (CBT) for obsessive-compulsive disorder (OCD) and anxiety disorders, with additional expertise in working with high-performance athletes.
Dr. Valle brings a distinctive international clinical background to his practice. He completed his postdoctoral fellowship at Stanford University School of Medicine’s Department of Psychiatry and Behavioral Sciences and earned his doctorate in clinical psychology from The Wright Institute in Berkeley. He also holds a Master’s degree in crisis and trauma from Tel Aviv University and is a licensed clinical psychologist in Mexico City, his place of origin. -
Matt van de Rijn
Sabine Kohler, MD, Professor of Pathology, Emeritus
Current Research and Scholarly InterestsOur research focuses on molecular analysis of human soft tissue tumors (sarcomas) with an emphasis on leiomyosarcoma and desmoid tumors. In addition we study the role of macrophages in range of malignant tumors.
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Pieter van der Starre
Professor of Anesthesiology, Perioperative and Pain Medicine at the Stanford University Medical Center, Emeritus
Current Research and Scholarly InterestsCardiovascular Pharmacology, Cardiovascular Physiology,
Neurophysiology and Monitoring,
Transesophageal Echocardiography -
Keith Van Haren, MD
Associate Professor of Neurology and Neurological Sciences (Pediatric Neurology) and of Pediatrics
Current Research and Scholarly InterestsOur research team is working to develop new treatments for children at risk of neurodegenerative diseases. We are primarily focused on multiple sclerosis and X-linked adrenoleukodystrophy, two conditions that involve inflammatory and metabolic disruption of the myelin that insulates brain cells. A key area of interest for us is how nutrient deficiencies during childhood may contribute to the disease processes and whether nutritional interventions could play a role in prevention.
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Krisa Van Meurs
Rosemarie Hess Professor, Emerita
Current Research and Scholarly InterestsMy research interests include persistent pulmonary hypertension of the newborn, hypoxic respiratory failure, inhaled nitric oxide therapy, ECMO, congenital diaphragmatic hernia, neonatal clinical trials, and the use of aEEG and NIRS to detect brain injury.
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Capucine Van Rechem
Assistant Professor of Pathology (Pathology Research)
On Leave from 02/01/2026 To 03/15/2026Current Research and Scholarly InterestsMy long-term interest lies in understanding the impact chromatin modifiers have on disease development and progression so that more optimal therapeutic opportunities can be achieved. My laboratory explores the direct molecular impact of chromatin-modifying enzymes during cell cycle progression, and characterizes the unappreciated and unconventional roles that these chromatin factors have on cytoplasmic function such as protein synthesis.
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Peter Johannes van Roessel
Clinical Professor, Psychiatry and Behavioral Sciences
BioDr. Peter van Roessel, MD, PhD, completed his MD at Stanford University and his residency training in psychiatry at Columbia University and the New York-Presbyterian Hospital in New York City, with additional training in psychodynamic psychotherapy via the Columbia University Center for Psychoanalytic Training and Research. Prior to joining the clinical faculty at Stanford, he worked for several years as Associate Director of the general research unit of the New York State Psychiatric Institute, a premier state-funded research hospital affiliated with Columbia University.
At Stanford, Dr. van Roessel sees adult mood and anxiety disorders outpatients through the Assessment and Psychodynamic Psychotherapy Clinics and participates in resident training and patient care as director of the resident Continuity Clinic and as a supervisor in psychodynamic psychotherapy. He additionally directs the third-year resident curriculum in psychopathology and psychopharmacology and co-leads a new adult outpatient ketamine-assisted psychotherapy clinic.
As Director of Clinical Research for the department's Rodriguez Translational Therapeutics Lab, he sees individuals with obsessive-compulsive spectrum disorders for evaluations and research-protocol driven clinical treatment and leads clinical neuroscience studies pioneering rapid-acting interventions in OCD. Clinically motivated research interests include the nature and neural correlates of metacognitive awareness ('insight') in OCD and related disorders, and particularly the relationship of awareness to mechanisms of attentional control and the processing of incongruity and error. Dr. van Roessel additionally contributes as co-investigator to the Suppes Exploratory Therapeutics Laboratory and to the Williams PANLab, on clinical trials advancing psychedelic-assisted psychotherapies and biomarker-informed precision medicine in depression and posttraumatic stress disorder.
Dr. van Roessel pursued research training in basic neuroscience prior to his clinical training, completing an MPhil in Biology via the Open University, UK, for research performed at the Max Planck Institute for Developmental Biology in Tübingen Germany, and a PhD in molecular and developmental neurobiology at the University of Cambridge, UK. He has contributed to work in the lab of Dr Julia Kaltschmidt (Stanford) on studies of GABAergic/Glutamatergic interneuronal circuity in mouse. He received a 2018 NARSAD Young Investigator Award to pursue study of nitrous oxide as a rapid-acting treatment for OCD, he was a 2020-2022 Miller Foundation Fellow, and from 2020 to 2022 was a Advanced Fellow in Mental Illness Treatment and Research via the Sierra Pacific Mental Illness Research, Education, and Clinical Center of the Palo Alto VA. Dr. van Roessel is a Fellow of the American Psychiatric Association and a member of the American College of Psychiatrists.
